Within hours of his inauguration, President Donald Trump signed an executive order that would withhold U.S. citizenship from the children of some immigrants born in the United States, calling the order a “big one.” The executive order would end a right that the U.S. Constitution has guaranteed for more than 150 years.

The legal fight over President Trump’s order ending birthright citizenship is advancing on a path toward the Supreme Court after a New Hampshire federal judge blocked the president's order on Thursday.